Law, if you notice when reading about the laws of physics it is stated as a fact and has been accepted as the truth.
For example : Newton's first law of physics
"An object in motion tends to stay in motion until an object of an opposite force and direction acts upon it."
hope this helps have a nice day
And reproductive isolation
Based on what I can make from thinking and mental observation, I think the reason being that coal isn't considered a mineral is that it is carbon based. In other words, its made from organic organisms (decayed organisms) which means that it doesn't have its own set of a defined element. While a mineral such as Iron (FE) has an atomic number of 26, electric configuration and a set atomic weight of 55.845. If there is an element feature such as this, you know for sure its Iron. Note: I got the element details because I have a periodic table chart right in front of my computer
Answer:
c
Explanation:
because thats what I think the answer can be
In order to produce an effective immune response within the body, the person must be injected with a dosage of a virus or bacteria, and for it to be allowed to grow in the person, which replicates just enough to stimulate a response from the immune system.